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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2007-05-06 14:50:44 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-07 12:12:59 -0700 |
| commit | 1525a2ad76f991eba9755f75c9b6d4d97abad25e (patch) | |
| tree | 7e5307d825e1f8a55581a0b465865b9f2cc90af6 /kernel/power/user.c | |
| parent | 04293355ac9dbe81bd01b89ca2adb58be34c2c60 (diff) | |
| download | linux-1525a2ad76f991eba9755f75c9b6d4d97abad25e.tar.gz linux-1525a2ad76f991eba9755f75c9b6d4d97abad25e.tar.bz2 linux-1525a2ad76f991eba9755f75c9b6d4d97abad25e.zip | |
swsusp: fix error paths in snapshot_open
We forget to increase device_available if there's an error in snapshot_open(),
so the snapshot device cannot be open at all after snapshot_open() has
returned an error.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/power/user.c')
| -rw-r--r-- | kernel/power/user.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/power/user.c b/kernel/power/user.c index 845acd84cb23..bd1771f7a64e 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -49,12 +49,14 @@ static int snapshot_open(struct inode *inode, struct file *filp) if (!atomic_add_unless(&device_available, -1, 0)) return -EBUSY; - if ((filp->f_flags & O_ACCMODE) == O_RDWR) + if ((filp->f_flags & O_ACCMODE) == O_RDWR) { + atomic_inc(&device_available); return -ENOSYS; - - if(create_basic_memory_bitmaps()) + } + if(create_basic_memory_bitmaps()) { + atomic_inc(&device_available); return -ENOMEM; - + } nonseekable_open(inode, filp); data = &snapshot_state; filp->private_data = data; |